<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <script src="echarts.js"></script>
    <title>Title</title>
</head>
<body>
<body>
<!-- 为 ECharts 准备一个定义了宽高的 DOM -->
<div id="main" style="width: 600px;height:400px;"></div>
</body>
</body>
</html>